Pneumatic tire for vehicle-wheels.



E. R. RIEDINGER. PNEUMATIC TIRE'FOB. VEHICLE WHEELS.

APPLICATION FILED JULY 2, 1912.

1,41 ,350. Patented 0ct.15,1912.

WITNESSES 'NVENTOR Euggne Richard Riedinger ATTORNEYS EUGENE RICHARD RIEDINGER,

OF LONDON, ENGLAND, ASSIGNOR ONE-HALF EU ANDREW FRASER, OF LONDON, ENGLAND.

PNEUMATIC TIRE FOR VEHICLE-WHEELS.

Specification of Letters Patent.

Patented tllct. 15, l 11.25..

Application filed July 2, 1312. Serial No. 707,318.

fl '0 all whom it may concern:

Be it known that l, EI GENE. Rmnann Rinnmcna, a citizen of the America, and resident of Si Upper Kennington Lane, London, S. E, England, coach-builder, have invented certain new and useful Improvements in Pneumatic Tires for Vehicle-lVlieels, of which the following is a specification.

This invention consists of an improved pneumatic tire-construction for vehicle wheels, constituted by a novel combination of parts comprising an inner rim permanently concentric with the axle, an intermediate or floating rim of greater diameter than said inner rim and displaceable relatively thereto, and an outer rim of greater diameter than said intermediate rim and permanently concentric therewith, the inner and outer rims having each a pair of recurved lateral flanges directed outward from the center of the wheel while the intermediate rim has similar pair of flanges directed inward toward said center; a pair of separate elastic annular cheeks having beadings at their inner and outer edges adapted to interlock with the flanges of the inner and intermediate rims respectively so that be tween said rims and elastic cheeks an annular space is inclosed for the reception of the air-tube; an approximately V-shaped expausible security-band comprising an annular series oi" segments applied between the outer margins of the respective elastic cheeks and secured by radial bolts to the innor side of the intermediate rim; a tear]- band carried by the outer rim and having lateral headings. adapted to interlock with the flanges o'l said rim; a pair of lateral annular clamping-plates for maintaining conccntricity between the outer and intermediate rims by the exertion of a wedging action between said rims at each side and throughout the circumference of both; and bolts passing transversely through said clamping-plates and the intervening annular space and serving to draw the one clamping-plate toward the other.

In the accompanying drawings, Figure l is a transverse section of the folly and tire of a wheel embodying the present invention, the various parts being shown intheir normal relative positions. Fig. is a similar view but with the outer rim (carrying the United States of tread-band), and one of the annular clamp lug-plates, separately displaced.

A represents the wooden felly (or equiv=rlent rigid portion of the wheel concentric with the axle) B the inner rim permanently mounted on the telly; C the air-tube; l), U the pair of separate annular elastic chcrserving to inclose the air-tuhe (l laterally,

l attached at their inner peripheries to the inner rim l3 and at their outer pcrig'iher as to the floating or intermediate rim if)", and F the tire-band supported concentrically with the intermediate rim E by the dctachable outer rim Gr.

The annular cheeks D may be formed of any suitable elastic material such as rubber and canvas fabric or rubber and fiber in the well-known manner. Each cheek is provided at or near its inner and outer edges with laterally projecting annular headings H and J adapted to interlock with inwardly recurved lateral flanges h and j on the inner and intermediate rims B andE respectively; the flanges j on the intermediate rim E projecting therefrom toward the center so that this rim E may be constituted (in etl'ect) by 8% a diametrically enlarged but reversed counterpart of the iuner rim B as indicated.

Those portions Z. ls ol'. the internal surfaces of the respective checks 1), l) which are comprised between the flanges 71, 72 ot' the inner rim B, converge toward one another in the direction of said rim. so that the pressure exerted by the inflated air-tube (l exercises a wedging action between the surfaces is, I: suliicicnt to force the headings l-l. ll laterally apart and to hold them sccurely iulerloclicd with the flanges lo. 71 as in the case of an ordinary pneumatic tirecover. Similarly. these portions 7. 7 of the internal surfaces of the respective checkswhich are comprised between the flanges j, j of the intermedinate riln E. converge toward one another in the direction of said rim, so that the pressure exerted by the inflated air-tube exercises a wedgingaction 1 between the surfaces Z, 5 suflicicnt to force the headings J. J laterally apartinto ill-a tel-locking engagement with the flanges j.

In order, however, to rend r this engagement of'thc headings .l. J, with the l'langcs j, of the intermediate rim E more secure, an apl'n'oximately V-shaped security-band L is employed to exert a positive or mechanical wedging action between the surfaces Z, Z; this band L, which is applied in segments so as to be readily expansible, be ing detachably'secured to the intermediate rim E by means of bolts M which pass radially through holes in the .band and rim as indicated. A substantially similar securityband might also (if desired) be employed between the surfaces 7c, of the cheeks D, D,

this latter security-band ,being, however, made contractible instead of expansible, and the bolts by which it is attached passing radially through the rim B and telly A, as will be readily understood.

The outer rim G, against which the base of the tread-band F beds itself, has a pair of inwardly recurred lateral flanges n, n adapted to interlock with annular headings N, N, projecting laterally at the base of the tread-band, so that this rim G may be constituted (in effect) by a diametrically enlarged counterpart of the inner rim B. The

' other, exert a wedging action between the respective rims at each side and throughout the-circumference of both, with the result that the outer rim G, being a closed annulus, is held concentric with the intermediate rim E even if made of considerably larger diameter than the latter. Of these annular clamping-plates one, as P may be permanently .tixcd to the intermediate rim E by rivets p as indicated, the outer margin of this plate being outwardly flared as at I to form a seat for the outwardly curved surface of the flange '27. at the corresponding side of the outer rim G. The other clamping-plate P which is entirely separate from both rims -has its inner and outer margins both flared as shown at 1', s, so as to be adapted to become wedged between the outwardly curved surfaces of the flanges and n at the corresponding side of the rims E and G res 'iectively. Through holes provided in both clamping-plates P and P pass transverse bolts T serving'to-draw the plates together (or to draw the plate 1 toward the plate P these bolts extending through the closed annular space O'inclosed between the two rims and the clamping plates. The annular space 0 also serves for the reception of, and access to, the nuts m of the bolts M whereby the security-band L is drawn toward the intermediate rim E; the complete closure of the space 0 preventing the nuts m from becoming clogged with dirt. I

It will be observed that, on loosening the bolts T, the outer rim G with the treadband F may be readily removed and replaced without the necessity of disturbing the attachment existing between the'intermediate rim E and the elastic annular cheeks D.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, we declare that what we claim is- The herein described improved pneumatic tire-construction for vehicle wheels, consisting in the combination of an inner rim permanently concentric with the axle, an intermediate or floating rim of greater diameter than said inner rim and displaceable relatively thereto, and an outer rim of greater diameter than said intermediate rim and permanently concentric therewith, the inner and outer rims having each a pair of recurved lateral flanges directed outward ,ner side of the intermediate rim; a treadband carried by the outer rim and having lateral headings adapted to interlock with the flanges of said rim; a pair of lateral annular clamping-plates for maintaining concentricity between the outer and intermediate rimsby the exertion of awedging action between'said time at each side and throughout the circumference of both; and bolts passing transversely through said clampingplates and the intervening annular space and serving to draw the one clamping-plate toward the other; substantially as illustrated in the accompanying drawings.

Dated this 18 day of June 1912.

' EUGENE RICHARD ltlllDlNGEl lVitnesses GEORGE E. MINTERN, -BERTRAM Bnw. 

